The movie talks upon an aircraft from outer space that arrives to earth and go out aliens and they are hanging with human beings . As Aliens from Outer Space are slowly switching places with real humans . One of the first switching is an attractive young (Tom Tryon) about to get wedded to a beautiful girl called Marge (Gloria Talbott). One year marriage later she still feels there are numerous rare things about him , as he doesn't have feelings , nor emotions. A horrified Marge then attempts to warn everyone of the alien threat .

It's a typical B movie of the 50s , it has suspense , thriller , tension and fun . Tom Tryon as the alien husband is fine and Gloria Talbott as his distrustful wife is enjoyable , she usually was in sci-fi films by that time . There appears a very secondary role , Ty Hardin , who along with Tom Tryon were two beefcakes who habitually played movies for youth . In fact , the scene at the beach gave movie audiences their first look at Ty Hardin's bare chest . Special effects , FX , are average , though by that time were quite well ; they are in charge of John P.Fulton , a craftsman with great experience and a long career from the silent cinema . Production design by Henry Bumstead who has worked along with Alfred Hitchcock (Vertigo, Topaz) and today continues , being Clint Eastwood's usual set decorator (Unforgiven , Mystic river) . However , the sets in aircraft interior are ridiculous and embarrassing . The motion picture was regularly directed by Gene Fowler Jr , he was a famous editor and occasionally director of Western as ¨The Oregon Trail¨ and terror as ¨I was a teenage wolf¨ . The flick will appeal to science fiction and fantastic movies fans . Rating : Mediocre but amusing .